This chapter presents a case study on Using Biological Mechanisms to Treat Diseases and Disorders using the discovery engineering process. In this lesson, students read a case study about scientists who discovered a way to use snake venom in the diagnosis of an autoimmune disease called myasthenia gravis. They also learn the biochemical pathway of cobra venom and model the mechanism of competitive inhibition for acetylcholine receptors. Students then research avenues in which venom can be used to treat a disease and design their own venom-based medication. This lesson may be taught in intermediate and advanced biology courses during a unit on cell regulation. A list of materials, teacher background information, teacher notes, references, resources, assessments, and standards are provided. This book selection also includes the Table of Contents, About the Authors, Acknowledgments, Introduction, and Index.